After yesterday’s exciting news about the Curiosity rover finding methane and organics on Mars, here is a reminder that the planet is rather Earth-like in other ways too, such as having water clouds and fog. This well-known image is from the Mars Express spacecraft, showing dense fog filling canyons in Valles Marineris, the giant canyon system that dwarfs Earth’s Grand Canyon. Even in Mars’ thin… Read More
Mars can seem amazingly Earth-like in many ways, and that includes weather. Bill Dunford recently posted some new images from the Mars Express spacecraft, providing some great views of Martian clouds as they drift over the landscape below. The one above is a beautiful example and all of them can be seen here. While Martian … Read more
With all of the attention that NASA’s rovers Opportunity and Curiosity have been getting, and deservedly so, we might forget sometimes that there are still other spacecraft orbiting Mars as well. NASA’s Mars Odyssey and Mars Reconnaissance Orbiter continue to return amazing high-resolution views of the planet from orbit, but there is also the ESA’s Mars Express, … Read more
The huge Grand Canyon is one of the greatest natural wonders on Earth, offering a glimpse into our planet’s dynamic geological history. But there is another canyon that is even larger, much larger – on Mars.
The idea that Mars used to be a “water world” and sort of like a smaller version of Earth in many ways is now pretty much accepted among planetary scientists; the debate continues however as to just how wet it was and for how long. The answer would have direct implications for the possibility of life ever … Read more
For a long time now, evidence has continued to indicate that Mars was once a water world – near-surface groundwater, lakes, rivers, hot springs and, according to some planetary models, even an ancient ocean in the northern hemisphere. That last one in particular has been a subject of intense debate; some scientists see evidence for … Read more
The Mars Express orbiter has taken new images of the large extinct volcano Tharsis Tholus on Mars. At about 8 km (5 miles) tall and with a base that stretches about 155 km x 125 km (96 miles x 78 miles), it is a medium-sized volcano for Mars, but is a giant compared to volcanoes … Read more